CN104333896B - Microcell base station and its method of adjustment and adjustment system for sending power - Google Patents

Microcell base station and its method of adjustment and adjustment system for sending power Download PDF

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Publication number
CN104333896B
CN104333896B CN201410706285.0A CN201410706285A CN104333896B CN 104333896 B CN104333896 B CN 104333896B CN 201410706285 A CN201410706285 A CN 201410706285A CN 104333896 B CN104333896 B CN 104333896B
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CN
China
Prior art keywords
microcell base
transmission power
base station
adjustment
base stations
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Application number
CN201410706285.0A
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Chinese (zh)
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CN104333896A (en
Inventor
朱亚军
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东莞宇龙通信科技有限公司
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Priority to CN201410706285.0A priority Critical patent/CN104333896B/en
Publication of CN104333896A publication Critical patent/CN104333896A/en
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Publication of CN104333896B publication Critical patent/CN104333896B/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/06TPC algorithms
    • H04W52/14Separate analysis of uplink or downlink
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/06TPC algorithms
    • H04W52/14Separate analysis of uplink or downlink
    • H04W52/143Downlink power control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/24TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/34TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/34TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • H04W52/343TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading taking into account loading or congestion level
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/38TPC being performed in particular situations
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04Large scale networks; Deep hierarchical networks
    • H04W84/042Public Land Mobile systems, e.g. cellular systems
    • H04W84/045Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B

Abstract

The present invention provides a kind of method of adjustment of the transmission power of microcell base station, a kind of adjustment system of the transmission power of microcell base station and a kind of microcell base stations, the method of adjustment of the transmission power of the microcell base station, it include: the transmission power that other microcell base stations are obtained when needing to transmit downlink data;The transmission power of the downlink data is transmitted according to the transmission power adjustment of the load condition of the microcell base station and other microcell base stations.Technical solution of the present invention can be effectively prevented from and the interference between other microcell base stations under the premise of ensuring to service quality with higher is loaded.

Description

Microcell base station and its method of adjustment and adjustment system for sending power

Technical field

The present invention relates to fields of communication technology, in particular to a kind of adjustment side of the transmission power of microcell base station Method, a kind of adjustment system for sending power of microcell base station and a kind of microcell base station.

Background technique

With the increase of business demand amount, the data rate of wireless transmission is urgently promoted.In current research, mainly The gain of cell splitting is obtained by introducing low power nodes, and then improves the data rate and covering model of hot zones It encloses.However as the densification of network node, the interference problem between node becomes the bottleneck of limitation network performance;Meanwhile greatly The presence of amount network node will lead to energy expense increase, this brings great challenge to the operation cost of operator.

In order to avoid interfering with each other between low power nodes, while the power consumption of low power nodes is reduced, in 3GPP In done a large amount of work.Such as in Rel-10/11, avoids, propose for the interference between low power nodes and macro base station The technology of eICIC/FeICIC is kept away by introducing the concept of ABS (Almost Blank Subframe, near barren subframe) Exempt from mutual interference.However in this scheme, the remaining transmission on ABS will continue to bring interference.Further, exist In the research of Rel-12, in order to avoid the interference between small cell (microcell base station), small cell on/ is proposed The concept of off, realized by the semi-static some small cell of closing interference avoid with energy-efficient effect, however close Small cell can impact existing user.

Therefore, how under the premise of ensuring service quality with higher to user, it is effectively prevented from Microcell Interference between base station becomes technical problem urgently to be resolved.

Summary of the invention

The present invention is based at least one above-mentioned technical problem, proposes a kind of transmission power of new microcell base station Adjusted Option, can ensure to load service quality with higher under the premise of, be effectively prevented from and other Microcells Interference between base station.

In view of this, the invention proposes a kind of methods of adjustment of the transmission power of microcell base station, comprising: needing to pass When defeated downlink data, the transmission power of other microcell base stations is obtained;According to the load condition of the microcell base station and described The transmission power adjustment of other microcell base stations transmits the transmission power of the downlink data.

In the technical scheme, by when needing to transmit downlink data, according to the load condition of microcell base station and its The transmission power of the transmission power adjustment transmission downlink data of his microcell base station, makes it possible to the load according to microcell base station State is that can satisfy the range of loading demand by power adjustment is sent, to ensure to load service quality with higher;Together When, it also can be small to other by the transmission power adjustment for sending downlink data according to the transmission power of other microcell base stations The smallest range is interfered in area base station, and then realizes under the premise of ensuring to service quality with higher is loaded, effectively Avoid the effect of the interference between microcell base station.

In the above-mentioned technical solutions, it is preferable that further include: in the power tune for receiving other microcell base stations transmission When whole request, the transmission power for transmitting the downlink data is adjusted according to power adjustment request;And/or to described Other microcell base stations send power adjustment request, so that other described microcell base stations adjust other described microcell base stations and exist Transmit transmission power when downlink data.

In the technical scheme, it is requested by receiving the power adjustment of other microcell base stations transmission, to transmission power It is adjusted, makes it possible to the appropriate adjustment under the scheduling of other microcell base stations and send power, to reduce to other Microcells The interference of base station;Similarly, by sending power adjustment request to other microcell base stations, other microcell base stations can be dispatched Appropriate adjustment sends power, and then also can reduce mutual interference.

In the above-mentioned technical solutions, it is preferable that further include: the variation of the load condition of microcell base station described in real-time detection Situation;The transmission power of the downlink data is transmitted according to the adjustment of the situation of change of the load condition.

In the technical scheme, during the work time due to microcell base station, the load in service range can become Change, thus by according to the situation of change of load condition adjust send power, make it possible to the service request amount of load it is more, It when load number is increased or load apart from microcell base station farther out, suitably improves and sends power, to guarantee the service to load Quality;Meanwhile also can load service request amount is less, load number is reduced or load is closer apart from microcell base station When, appropriate reduce sends power, to avoid the interference to other microcell base stations, while also can reduce the energy of microcell base station Amount consumption.

In the above-mentioned technical solutions, it is preferable that when the microcell base station is in close state, if passing through wireless interface And/or wireline interface receives the instruction for switching to open state, it is determined that needs to transmit the downlink data.

In the above-mentioned technical solutions, it is preferable that the load condition includes: the service request amount, described negative of the load It is loaded in the quantity of position in the coverage area of the microcell base station, the load.

In the above-mentioned technical solutions, it is preferable that further include: by sending system information, RRC signaling, media access control Unit signaling or physical layer signaling notify transmission power adjusted to the load;And/or it will be adjusted by return link Transmission power afterwards is notified to other described microcell base stations.

In the technical scheme, by notifying transmission power adjusted to load, so that load can be to reception function Rate is adaptively adjusted, and is matched with the transmission power with microcell base station;By by transmission power adjusted notify to Other microcell base stations enable other microcell base stations to be also adjusted correspondingly the transmission power of itself, to ensure Under the premise of to service quality with higher is loaded, the interference that is effectively prevented between microcell base station.

According to another aspect of the present invention, it is also proposed that a kind of adjustment system of the transmission power of microcell base station, comprising: Acquiring unit, for when needing to transmit downlink data, obtaining the transmission power of other microcell base stations;Adjustment unit is used for The lower line number is transmitted according to the transmission power adjustment of the load condition of the microcell base station and other microcell base stations According to transmission power.

In the technical scheme, by when needing to transmit downlink data, according to the load condition of microcell base station and its The transmission power of the transmission power adjustment transmission downlink data of his microcell base station, makes it possible to the load according to microcell base station State is that can satisfy the range of loading demand by power adjustment is sent, to ensure to load service quality with higher;Together When, it also can be small to other by the transmission power adjustment for sending downlink data according to the transmission power of other microcell base stations The smallest range is interfered in area base station, and then realizes under the premise of ensuring to service quality with higher is loaded, effectively Avoid the effect of the interference between microcell base station.

In the above-mentioned technical solutions, it is preferable that further include: receiving unit, for receiving other microcell base stations hair The power adjustment request sent;The adjustment unit is also used to, and is requested according to the power adjustment that the receiving unit receives The transmission power for transmitting the downlink data is adjusted;And/or transmission unit, for being sent out to other described microcell base stations Power adjustment is sent to request, so that other described microcell base stations adjust described other microcell base stations when transmitting downlink data Send power.

In the technical scheme, it is requested by receiving the power adjustment of other microcell base stations transmission, to transmission power It is adjusted, makes it possible to the appropriate adjustment under the scheduling of other microcell base stations and send power, to reduce to other Microcells The interference of base station;Similarly, by sending power adjustment request to other microcell base stations, other microcell base stations can be dispatched Appropriate adjustment sends power, and then also can reduce mutual interference.

In the above-mentioned technical solutions, it is preferable that further include: detection unit, for microcell base station described in real-time detection The situation of change of load condition;The adjustment unit is also used to, according to the adjustment transmission of the situation of change of the load condition The transmission power of downlink data.

In the technical scheme, during the work time due to microcell base station, the load in service range can become Change, thus by according to the situation of change of load condition adjust send power, make it possible to the service request amount of load it is more, It when load number is increased or load apart from microcell base station farther out, suitably improves and sends power, to guarantee the service to load Quality;Meanwhile also can load service request amount is less, load number is reduced or load is closer apart from microcell base station When, appropriate reduce sends power, to avoid the interference to other microcell base stations, while also can reduce the energy of microcell base station Amount consumption.

In the above-mentioned technical solutions, it is preferable that further include: determination unit is closed for being in the microcell base station When state, if receiving the instruction for switching to open state by wireless interface and/or wireline interface, it is determined that need to transmit institute State downlink data.

In the above-mentioned technical solutions, it is preferable that the load condition includes: the service request amount, described negative of the load It is loaded in the quantity of position in the coverage area of the microcell base station, the load.

In the above-mentioned technical solutions, it is preferable that further include: notification unit, for by send system information, RRC signaling, Media access control unit signaling or physical layer signaling notify transmission power adjusted to the load, and/or pass through back Link is passed to notify transmission power adjusted to other described microcell base stations.

In the technical scheme, by notifying transmission power adjusted to load, so that load can be to reception function Rate is adaptively adjusted, and is matched with the transmission power with microcell base station;By by transmission power adjusted notify to Other microcell base stations enable other microcell base stations to be also adjusted correspondingly the transmission power of itself, to ensure Under the premise of to service quality with higher is loaded, the interference that is effectively prevented between microcell base station.

According to another aspect of the invention, it is also proposed that a kind of microcell base station, comprising: in any of the above-described technical solution The adjustment system of the transmission power of the microcell base station.Specifically, microcell base station is a kind of wireless access of low-power Node can have the equipment of wireless receiving and sending function to realize by intelligent terminal (such as smart phone).

By above technical scheme, can effectively be kept away under the premise of ensuring to service quality with higher is loaded Exempt from and the interference between other microcell base stations.

Detailed description of the invention

Fig. 1 shows the exemplary flow of the method for adjustment of the transmission power of the microcell base station of embodiment according to the present invention Figure;

Fig. 2 shows the schematic blocks of the adjustment system of the transmission power of the microcell base station of embodiment according to the present invention Figure;

Fig. 3 shows the schematic diagram of the service state of multiple microcell base stations according to first embodiment of the invention;

Fig. 4 shows the schematic diagram of the service state of multiple microcell base stations of second embodiment according to the present invention;

Fig. 5 shows the schematic diagram of the service state of multiple microcell base stations of third embodiment according to the present invention;

Fig. 6 shows the schematic diagram of the service state of multiple microcell base stations of the 4th embodiment according to the present invention.

Specific embodiment

To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application Feature in example and embodiment can be combined with each other.

In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below Specific embodiment limitation.

Fig. 1 shows the exemplary flow of the method for adjustment of the transmission power of the microcell base station of embodiment according to the present invention Figure.

As shown in Figure 1, the method for adjustment of the transmission power of the microcell base station of embodiment according to the present invention, comprising: step Rapid 102, when needing to transmit downlink data, obtain the transmission power of other microcell base stations;Step 104, according to described small The transmission power adjustment of the load condition of area base station and other microcell base stations transmits the transmission power of the downlink data.

In the technical scheme, by when needing to transmit downlink data, according to the load condition of microcell base station and its The transmission power of the transmission power adjustment transmission downlink data of his microcell base station, makes it possible to the load according to microcell base station State is that can satisfy the range of loading demand by power adjustment is sent, to ensure to load service quality with higher;Together When, it also can be small to other by the transmission power adjustment for sending downlink data according to the transmission power of other microcell base stations The smallest range is interfered in area base station, and then realizes under the premise of ensuring to service quality with higher is loaded, effectively Avoid the effect of the interference between microcell base station.

In the above-mentioned technical solutions, it is preferable that further include: in the power tune for receiving other microcell base stations transmission When whole request, the transmission power for transmitting the downlink data is adjusted according to power adjustment request;And/or to described Other microcell base stations send power adjustment request, so that other described microcell base stations adjust other described microcell base stations and exist Transmit transmission power when downlink data.

In the technical scheme, it is requested by receiving the power adjustment of other microcell base stations transmission, to transmission power It is adjusted, makes it possible to the appropriate adjustment under the scheduling of other microcell base stations and send power, to reduce to other Microcells The interference of base station;Similarly, by sending power adjustment request to other microcell base stations, other microcell base stations can be dispatched Appropriate adjustment sends power, and then also can reduce mutual interference.

In the above-mentioned technical solutions, it is preferable that further include: the variation of the load condition of microcell base station described in real-time detection Situation;The transmission power of the downlink data is transmitted according to the adjustment of the situation of change of the load condition.

In the technical scheme, during the work time due to microcell base station, the load in service range can become Change, thus by according to the situation of change of load condition adjust send power, make it possible to the service request amount of load it is more, It when load number is increased or load apart from microcell base station farther out, suitably improves and sends power, to guarantee the service to load Quality;Meanwhile also can load service request amount is less, load number is reduced or load is closer apart from microcell base station When, appropriate reduce sends power, to avoid the interference to other microcell base stations, while also can reduce the energy of microcell base station Amount consumption.

In the above-mentioned technical solutions, it is preferable that when the microcell base station is in close state, if passing through wireless interface And/or wireline interface receives the instruction for switching to open state, it is determined that needs to transmit the downlink data.

In the above-mentioned technical solutions, it is preferable that the load condition includes: the service request amount, described negative of the load It is loaded in the quantity of position in the coverage area of the microcell base station, the load.

In the above-mentioned technical solutions, it is preferable that further include: by sending system information, RRC signaling, media access control Unit signaling or physical layer signaling notify transmission power adjusted to the load;And/or it will be adjusted by return link Transmission power afterwards is notified to other described microcell base stations.

In the technical scheme, by notifying transmission power adjusted to load, so that load can be to reception function Rate is adaptively adjusted, and is matched with the transmission power with microcell base station;By by transmission power adjusted notify to Other microcell base stations enable other microcell base stations to be also adjusted correspondingly the transmission power of itself, to ensure Under the premise of to service quality with higher is loaded, the interference that is effectively prevented between microcell base station.

Fig. 2 shows the schematic blocks of the adjustment system of the transmission power of the microcell base station of embodiment according to the present invention Figure.

As shown in Fig. 2, the adjustment system 200 of the transmission power of the microcell base station of embodiment according to the present invention, comprising: Acquiring unit 202, for when needing to transmit downlink data, obtaining the transmission power of other microcell base stations;Adjustment unit 204, for transmitting institute according to the load condition of the microcell base station and the transmission power adjustment of other microcell base stations State the transmission power of downlink data.

In the technical scheme, by when needing to transmit downlink data, according to the load condition of microcell base station and its The transmission power of the transmission power adjustment transmission downlink data of his microcell base station, makes it possible to the load according to microcell base station State is that can satisfy the range of loading demand by power adjustment is sent, to ensure to load service quality with higher;Together When, it also can be small to other by the transmission power adjustment for sending downlink data according to the transmission power of other microcell base stations The smallest range is interfered in area base station, and then realizes under the premise of ensuring to service quality with higher is loaded, effectively Avoid the effect of the interference between microcell base station.

In the above-mentioned technical solutions, it is preferable that further include: receiving unit 206, for receiving other described microcell base stations The power adjustment of transmission is requested;The adjustment unit 204 is also used to, the power received according to the receiving unit 206 Adjustment request is adjusted the transmission power for transmitting the downlink data;And/or transmission unit 208, for it is described other Microcell base station sends power adjustment request, so that other described microcell base stations adjust other described microcell base stations and transmitting Transmission power when downlink data.

In the technical scheme, it is requested by receiving the power adjustment of other microcell base stations transmission, to transmission power It is adjusted, makes it possible to the appropriate adjustment under the scheduling of other microcell base stations and send power, to reduce to other Microcells The interference of base station;Similarly, by sending power adjustment request to other microcell base stations, other microcell base stations can be dispatched Appropriate adjustment sends power, and then also can reduce mutual interference.

In the above-mentioned technical solutions, it is preferable that further include: detection unit 210, for microcell base station described in real-time detection Load condition situation of change;The adjustment unit 204 is also used to, and is adjusted and is transmitted according to the situation of change of the load condition The transmission power of the downlink data.

In the technical scheme, during the work time due to microcell base station, the load in service range can become Change, thus by according to the situation of change of load condition adjust send power, make it possible to the service request amount of load it is more, It when load number is increased or load apart from microcell base station farther out, suitably improves and sends power, to guarantee the service to load Quality;Meanwhile also can load service request amount is less, load number is reduced or load is closer apart from microcell base station When, appropriate reduce sends power, to avoid the interference to other microcell base stations, while also can reduce the energy of microcell base station Amount consumption.

In the above-mentioned technical solutions, it is preferable that further include: determination unit 212 is closed for being in the microcell base station When closed state, if receiving the instruction for switching to open state by wireless interface and/or wireline interface, it is determined that need to transmit The downlink data.

In the above-mentioned technical solutions, it is preferable that the load condition includes: the service request amount, described negative of the load It is loaded in the quantity of position in the coverage area of the microcell base station, the load.

In the above-mentioned technical solutions, it is preferable that further include: notification unit 214, for by sending system information, RRC letter It enables, transmission power adjusted is notified to the load, and/or passed through by media access control unit signaling or physical layer signaling Return link notifies transmission power adjusted to other described microcell base stations.

In the technical scheme, by notifying transmission power adjusted to load, so that load can be to reception function Rate is adaptively adjusted, and is matched with the transmission power with microcell base station;By by transmission power adjusted notify to Other microcell base stations enable other microcell base stations to be also adjusted correspondingly the transmission power of itself, to ensure Under the premise of to service quality with higher is loaded, the interference that is effectively prevented between microcell base station.

The invention also provides a kind of microcell base stations, comprising: the transmission power of microcell base station as shown in Figure 2 Adjustment system 200.Specifically, microcell base station is a kind of radio access node of low-power, can pass through such as intelligent terminal (such as smart phone) there is the equipment of wireless receiving and sending function to realize.

Wherein, heretofore described power regulation scheme can be the tune carried out in the course of work of microcell base station It is whole, it is also possible to the adjustment carried out when microcell base station switches to working condition by closed state.Existed below with microcell base station The technical solution that the present invention will be described in detail for original state is in close state.

It should be noted that heretofore described microcell base station is in close state, there are many understanding modes, such as exist Under first way, closed state can refer to that small cell sends some signals with the longer period and does cell hair for terminal Now use;Under a second technique, closed state can refer to that small cell does not send any signal, but need to go to continue or It is the terminal transmission around periodic monitor;Under a third procedure, closed state can also refer to that small cell is not sent Any signal does not go the transmission around monitoring yet, but the small cell needs to maintain on backhaul (return link) Interaction capabilities.

When small cell is in close state, if passing through the signaling request in air interface or backhaul Small cell enters the state of unlatching, then small cell needs go to open downlink transfer, and set suitable hair Send power.In order to set suitable transmission power, which needs to go to know the transmission situation of small cell around, This can be realized by two methods:

Method 1: the small cell informs that it sends power by the small cell that backhaul signals surrounding Occurrence, which can be in current agreement defined backhaul signaling type, such as X2 or S1, It is also possible to backhaul signaling type defined in subsequent protocol version.

Method 2: the small cell executes the operation of terminal, and the transmission of small cell around is known by air interface The case where power, such as the small cell can know small cell around by reading the system information of peripheral cell Downlink transmission power.

After learning and closing on the power information of small cell, which can be set the transmission power of itself To service user.The setting method of power can there are many kinds of, the transmission function of oneself is such as set according to the professional skill of terminal Rate.

In the course of work of small cell, small cell also itself adjustable downlink transmission power, such as In one embodiment of the invention, small cell is in the request for receiving the power adjustment that neighbouring small cell is sent Afterwards, the transmission power of oneself can be adjusted according to the content of request.In another embodiment, small cell can basis The transmission power of position or service conditions where the user of own services changed to adjust itself.

After small cell is to the transmission power adjustment of itself, which can pass through system information, RRC Signaling, MAC (Medium Access Control, media access control) CE (Control Element, control unit) or Physical layer signaling is come the case where notifying user's own power of service to change.At the same time it can also be signaled by backhaul The situation of change of the transmission power of the microcell base station closed on itself.

Below in conjunction with Fig. 3 to Fig. 6 with the specific embodiment technical solution that the present invention will be described in detail.

As shown in figure 3, small cell 304, small cell 306 and small cell 308 are in the open state, Communication service is provided for corresponding user equipment, and small cell 302 is in the state closed.

As shown in figure 4, when user equipment 310 enters in the coverage area of small cell 302, in order to user Equipment 310 provides service, can there is following two processing scheme:

Processing scheme one, other small cell, such as small cell 304, small cell 306 or small The transmission power that cell 308 improves itself carrys out served user equipment 310, in suc scheme, needs small cell 302 logical Scheduling request small cell 304, small cell 306 or the small cell 308 crossed on backhaul sends to improve Power, the specific setting for sending power can be realized by base station or the information that reports in conjunction with terminal is realized.

Processing scheme two, as shown in figure 4, by waking up small cell 302 come served user equipment 310, small Cell 302 can determine to enter by the Signalling exchange on the uplink of monitoring users equipment 310 or backhaul The state of unlatching.Small cell 302 after being woken, by obtain close on small cell power information and/ Or the uplink of user equipment 310 determines itself transmission power, to provide high quality clothes being ensured to be user equipment 310 Under the premise of business, avoid and interfering with each other between other small cell.

As shown in figure 5, (the small when user equipment 310 is moved to the center of the coverage area of small cell 302 Cell 302 can know this information by the information that user equipment 310 reports), small cell 302 determines to reduce itself Transmission power.Small cell 302 is notified by sending system information, RRC signaling, MAC CE or physical layer signaling The situation of change of user's (such as user equipment 310) of service itself transmission power.At the same time it can also logical by backhaul signaling Know that small cell 304, small cell 306 and small cell 308 itself send the situation of change of power.

As shown in fig. 6, working as small cell 302, small cell 304, small cell 306 and small cell When the number of users of 308 services is reduced or portfolio declines, small cell 302, small cell 304, small cell 306 and small cell 308 can be by mutually coordinated, and the transmission power that decision expands small cell 304 carrys out service area All users in domain, and small cell 302, small cell 306 and small cell 308 enter closed state, To reduce the power consumption of small cell.

The technical scheme of the present invention has been explained in detail above with reference to the attached drawings, and the invention proposes a kind of new microcell base stations Transmission power Adjusted Option, can ensure to load service quality with higher under the premise of, be effectively prevented from Interference between other microcell base stations.

The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (11)

1. a kind of method of adjustment of the transmission power of microcell base station characterized by comprising
When needing to transmit downlink data, the transmission power of other microcell base stations is obtained;
According to the transmission power adjustment of the load condition of the microcell base station and other microcell base stations transmission it is described under The transmission power of row data;
The situation of change of the load condition of microcell base station described in real-time detection;
The transmission power of the downlink data is transmitted according to the adjustment of the situation of change of the load condition.
2. the method for adjustment of the transmission power of microcell base station according to claim 1, which is characterized in that further include:
When receiving the power adjustment request that other described microcell base stations are sent, requested according to the power adjustment to transmission The transmission power of the downlink data is adjusted;And/or
Power adjustment request is sent to other described microcell base stations, so that other are micro- described in the adjustment of other described microcell base stations Transmission power of the cell base station when transmitting downlink data.
3. the method for adjustment of the transmission power of microcell base station according to claim 1, which is characterized in that described small When area base station is in close state, if receiving the instruction for switching to open state by wireless interface and/or wireline interface, Determination needs to transmit the downlink data.
4. the method for adjustment of the transmission power of microcell base station according to any one of claim 1 to 3, feature exist In the load condition includes:
The service request amount of the load, the position in the coverage area for being supported on the microcell base station, the load Quantity.
5. the method for adjustment of the transmission power of microcell base station according to claim 4, which is characterized in that further include:
By sending system information, RRC signaling, media access control unit signaling or physical layer signaling for transmission function adjusted Rate is notified to the load;And/or
Transmission power adjusted is notified to other described microcell base stations by return link.
6. a kind of adjustment system of the transmission power of microcell base station characterized by comprising
Acquiring unit, for when needing to transmit downlink data, obtaining the transmission power of other microcell base stations;
Adjustment unit, for according to the load condition of the microcell base station and the transmission power tune of other microcell base stations The transmission power of the whole transmission downlink data;
Detection unit, the situation of change of the load condition for microcell base station described in real-time detection;
The adjustment unit is also used to, and the transmission function of the downlink data is transmitted according to the adjustment of the situation of change of the load condition Rate.
7. the adjustment system of the transmission power of microcell base station according to claim 6, which is characterized in that further include:
Receiving unit, the power adjustment request sent for receiving other described microcell base stations;The adjustment unit is also used to, The power adjustment request received according to the receiving unit is adjusted the transmission power for transmitting the downlink data; And/or
Transmission unit, for sending power adjustment request to other described microcell base stations, so that other described microcell base stations Adjust the transmission power of other microcell base stations when transmitting downlink data.
8. the adjustment system of the transmission power of microcell base station according to claim 6, which is characterized in that further include:
Determination unit, for when the microcell base station is in close state, if being connect by wireless interface and/or wireline interface Receive the instruction for switching to open state, it is determined that need to transmit the downlink data.
9. the adjustment system of the transmission power of the microcell base station according to any one of claim 6 to 8, feature exist In the load condition includes:
The service request amount of the load, the position in the coverage area for being supported on the microcell base station, the load Quantity.
10. the adjustment system of the transmission power of the microcell base station according to any one of claim 6 to 8, feature exist In, further includes:
Notification unit, will for passing through transmission system information, RRC signaling, media access control unit signaling or physical layer signaling Transmission power adjusted is notified to the load, and/or is notified transmission power adjusted to described by return link Other microcell base stations.
11. a kind of microcell base station characterized by comprising the microcell base station as described in any one of claim 6 to 10 Transmission power adjustment system.
CN201410706285.0A 2014-11-28 2014-11-28 Microcell base station and its method of adjustment and adjustment system for sending power CN104333896B (en)

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EP14907156.5A EP3169115A4 (en) 2014-11-28 2014-12-31 Micro cell base station and method and system for adjusting transmit power of micro cell base station
US15/431,322 US10194399B2 (en) 2014-11-28 2017-02-13 Adjusting small cell transmit power according to load and transmit power of other small cells

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